diff --git a/aegisub/docs/doxygen/pages_reporter/index.dox b/aegisub/docs/doxygen/pages_reporter/index.dox
index 88c8ce19b..c47304e82 100644
--- a/aegisub/docs/doxygen/pages_reporter/index.dox
+++ b/aegisub/docs/doxygen/pages_reporter/index.dox
@@ -1,11 +1,5 @@
 /** @mainpage
 
-@defgroup base      Base
-@defgroup Unix      Unix
-@defgroup windows   Windows
-@defgroup osx       OS X
-@defgroup io        File I/O
-
 Main
  - @ref base